Question

The distance traveled by particle is given by x = 3+8t+7t^2. Find velocity and acceleration at t = 4 second.​

Answer 1

x=7t²+8t 3

on diffrentiation with t .

dx/dt=14t+8

v=14t+8 -(1)

at t =4

v=14×4+8

v=64.

on diffrentiation w.r.t t.

a=14.